diff --git a/plugin-designs/doxa-maps-spa/EMBED.md b/plugin-designs/doxa-maps-spa/EMBED.md
index 1f8a5d677..600d7c5d7 100644
--- a/plugin-designs/doxa-maps-spa/EMBED.md
+++ b/plugin-designs/doxa-maps-spa/EMBED.md
@@ -1,10 +1,27 @@
 # Embedding the Research Gallery
 
+![The Research Gallery embedded by script on a partner page: the tab rail on the left, Big Picture open](../../documentation/readme-images/deploy3-js-embed-dxlife.png)
+
 `<doxa-maps-spa>` (labeled **Research Gallery**) is the capability-5 app shell: one element whose
 tab rail nests every production map. It is built to drop onto somebody else's page. Below,
 `TREE` means the URL of the built `doxa-maps/` folder wherever it is served, for example
 `https://YOUR-HOST/doxa-maps`.
 
+## At a glance
+
+| | **Script embed** | **iframe embed** |
+|---|---|---|
+| **Paste** | two lines: `<script>` + `<doxa-maps-spa>` | one `<iframe>` |
+| **Sizing** | a block in your layout, `85vh` by default | whatever size you give the frame |
+| **Language** | follows your page (`<html lang>`), or `language="…"` | `?lang=…` on the `src` |
+| **Open on a map** | `tab="upg-100"` | `?tab=upg-100` |
+| **Keyless maps** | `provider="maplibre"` | `?provider=maplibre` |
+| **Your server must send** | CORS on the whole tree | CORS + `frame-ancestors` on the leaf page |
+
+**Seven production maps** sit in the rail: Big Picture, Simple Research and Regions (Dashboards);
+UPG-100 List and Prayer Progress (Prayer Mobilization); Cities with Internet and Gospel Resources
+(Gospel Research). An Experimental folder collects everything else in the tree.
+
 ## Script embed (recommended)
 
 ```html